![]() ![]() Therefore the Peer must separate the IKE control traffic from the data traffic. The UDP header uses the same port as ISAKMP control traffic. When GVC detects a NAT device, it encapsulates all ESP traffic (including DHCP packets) using the UDP header. To work around this problem, GVC is enabled to detect a NAT device in the middle. The ESP packets are simply dropped by the firewall with no indication back to GVC. The DHCP requests that get sent for the virtual adapter are sent down the tunnel like any other traffic and are thus encapsulated in ESP. ![]() SonicWall GVC may be run from behind a firewall or other device that allows ISAKMP traffic to pass through, but does not allow ESP traffic to pass through. Check the For Global VPN Client checkbox to use the DHCP Server for Global VPN Clients.
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